Sulfide mineral biodegradation and phytotoxicity of the
resulting products

D 2002

Sulfide mineral biodegradation and phytotoxicity of the resulting products

MANDL, Martin, Iva BARTÁKOVÁ and Šárka HELÁNOVÁ

Basic information

Original name

Sulfide mineral biodegradation and phytotoxicity of the resulting products

Authors

MANDL, Martin (203 Czech Republic, guarantor), Iva BARTÁKOVÁ (203 Czech Republic) and Šárka HELÁNOVÁ (203 Czech Republic)

Edition

Prague, 12th Int. Biodeterioration and Biodegradation Symp. p. 115-115, 2002

Publisher

Int. Biodeterioration Society

Other information

Language

English

Type of outcome

Stať ve sborníku

Field of Study

10600 1.6 Biological sciences

Country of publisher

Czech Republic

Confidentiality degree

není předmětem státního či obchodního tajemství

RIV identification code

RIV/00216224:14310/02:00006274

Organization unit

Faculty of Science

ISBN

80-86313-08-5

Keywords in English

sulfide biooxidation; Thiobacillus; phytotoxicity; pyrite; arsenopyrite

Abstract

V originále

Sulfuric acid and toxic metals are environmental contaminants released from sulfide mines and wastes as a result of the sulfide mineral (bio)oxidation processes. Electrochemical and kinetic studies on mechanism of arsenopyrite oxidation by Acidithiobacillus ferrooxidans specified the forms of arsenic in the oxidation products. Studies on mechanism of pyrite and sulfur oxidations demonstrated an indirect role of bacteria in oxidation of these solid substrates. The main products of the above processes are sulfuric acid, arsenic(III), arsenic(V) as a secondary product, iron(III) and sulfates. The above substances were the subjects of phytotoxicity tests (root elongation and seed germination of Lactuca sativa) under specific conditions of acidic environment of sulfide wastes. Interference effects on metal phytotoxicity determination were demonstrated on iron. Under conditions of controlled iron solubility, constant pH and ionic strength, defined phytotoxic parameters were determined to evaluate solely the effect of iron. EC50 values differed from those described in the literature.

Links

GA525/00/0785, research and development project

Name: Acidifikační procesy v sulfidových odpadech

Investor: Czech Science Foundation, Acidification processes in sulfide wastes

MSM 143100005, plan (intention)

Name: Strukturně-funkční vztahy biomolekul a jejich role v metabolismu

Investor: Ministry of Education, Youth and Sports of the CR, Biomolecular Structure-function Relationships and their role in the Metabolism

Citovat

MANDL, Martin, Iva BARTÁKOVÁ and Šárka HELÁNOVÁ. Sulfide mineral biodegradation and phytotoxicity of the resulting products. In 12th Int. Biodeterioration and Biodegradation Symp. Prague: Int. Biodeterioration Society, 2002, p. 115. ISBN 80-86313-08-5.

@inproceedings{404657,
   author = {Mandl, Martin and Bartáková, Iva and Helánová, Šárka},
   address = {Prague},
   booktitle = {12th Int. Biodeterioration and Biodegradation Symp.},
   keywords = {sulfide biooxidation; Thiobacillus; phytotoxicity; pyrite; arsenopyrite},
   language = {eng},
   location = {Prague},
   isbn = {80-86313-08-5},
   pages = {115-115},
   publisher = {Int. Biodeterioration Society},
   title = {Sulfide mineral biodegradation and phytotoxicity of the resulting products},
   year = {2002}
}

TY  - CONF
ID  - 404657
AU  - Mandl, Martin - Bartáková, Iva - Helánová, Šárka
PY  - 2002
TI  - Sulfide mineral biodegradation and phytotoxicity of the resulting products
PB  - Int. Biodeterioration Society
CY  - Prague
SN  - 8086313085
KW  - sulfide biooxidation
KW  - Thiobacillus
KW  - phytotoxicity
KW  - pyrite
KW  - arsenopyrite
N2  - Sulfuric acid and toxic metals are environmental contaminants released from sulfide mines and wastes as a result of the sulfide mineral (bio)oxidation processes. Electrochemical and kinetic studies on mechanism of arsenopyrite oxidation by Acidithiobacillus ferrooxidans specified the forms of arsenic in the oxidation products. Studies on mechanism of pyrite and sulfur oxidations demonstrated an indirect role of bacteria in oxidation of these solid substrates. The main products of the above processes are sulfuric acid, arsenic(III), arsenic(V) as a secondary product, iron(III) and sulfates. The above substances were the subjects of phytotoxicity tests (root elongation and seed germination of Lactuca sativa) under specific conditions of acidic environment of sulfide wastes. Interference effects on metal phytotoxicity determination were demonstrated on iron. Under conditions of controlled iron solubility, constant pH and ionic strength, defined phytotoxic parameters were determined to evaluate solely the effect of iron. EC50 values differed from those described in the literature.
ER  -

MANDL, Martin, Iva BARTÁKOVÁ and Šárka HELÁNOVÁ. Sulfide mineral biodegradation and phytotoxicity of the resulting products. In \textit{12th Int. Biodeterioration and Biodegradation Symp.}. Prague: Int. Biodeterioration Society, 2002, p.~115. ISBN~80-86313-08-5.

Detailed Information on Publication Record